Chilling-machine.



N. H. HILLER.

' GHILLING MACHINE.

APPLIOATON FILED JAN.11, 1909.

Patented May 25, 1909.

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GHILLING MACHINE.

APPLICATION FILED JAN.11,1909.

Patented May 25, 1909.

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N. H. HILLER. HILLING MAGHINE. APPLIUATION'HLBD 5,111.11, 1,909.

Patented May 25, 1909,

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NICOLAI H. HILLER, OF CARBONDALE, PENNSYLVANIA, ASSIGNOR TO CARBONDALE MACHINE COMPANY, 'OF CARBONDALE, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

Ne. ceases.

Specification of Letters'Patent.

CHILLNG-IVIACHINE.

Patented May 25, 1909.

application ined January 11, 1909. lserial No. 471,653.

To all whom it may concern:

Be it knownthat I, NICOLA! H. HILLER, al citizen of the United States of America, and a resident of Carbondale, county of Lackawanna, State of Pennsylvania, have invented certain new and 'useful Improvements in Chilling-Machines, of which the following is a specification. I

My invention relates to improvements in so-called chilling machines, i. e., machines'.

' more particularly pointed out in the claims.

Chilling machines such as herein referred to are usually constructed of a plurality of similarl sections connected in series, each section comprising) two concentric tubes, (the annular. space etween which constitutes a jacket for the flow of cooling liquid,)fa spiral conveyer within the inner tube, and end connections or headers, including uptakes connecting the inner tubes of adjacent sections and downtake headers connecting the jacket spaces oil adjacent sections; the `cooling iuid (ammonia, brine, water etc), commonly flowing through the 'ackets in a direction V35? reverse to that of the ow of the wax. through the inner tubes and corresponding uptakes. It is necessary to provide -for positive y forcin the solidifying wax u Athrough the upta res in. order to prevent c ogging of vthe machine at these points, and this I accomplish by the arrangement of the conveyer screws. It is also necessary to provide means lor withdrawing the conveyer screws from time to time, also the-v inner tubes within which these screws revolve, and it is ol' course desirable to be able to remove these parts without disturbing the connections of the various-- sections with one another. The uliilment of these various requirements is provided for in the machine herein illustrated and deA scribed.`

The object 'of my invention therefore, is to newal of the parts, for the ready cleaning of the machine, and for the ready assemblage of the various sections of the machine, and to. make the machine simple, easy to construct, assernble, clean, and operate.

Further objects of my invention will appear, hereafter.

In the accompanying drawings, in which one embodiment oi' my invention is illustrated, Figure I shows a sidev elevation of a plurality of sections of a machine embodying my invention, one of the sections Y, being shownin vertical longitudinal section; Fig. 2 shows a central vertical section of one of the water-circulation downtakes and adjacent parts of the machine; Fig. 3 shows an end elevation of this downtake,the'glands having been removed 3 Fig. 4. shows a detail vertical longitudinal section of an intermediate portion of one of the sections ,of the machine, illustrating the manner of connection of the sections of the inner tube and of the sections of the conveyer, Fig. 5 shows a transverse section through the coupling-of Fig.- 4; and Fig. 6 is a detail elevation showing the thrust bearing .atthe end ol each conveyer screw.

In said drawings, numerals I designate the cent sections being staggered, as 'indicated` particularly inFig. I and for the same reason the inner tubes 2 are each commonly made of a plurality of lengths of tubing joined by couplings 7. The conveyer screw 3 is also made, commonly, in a similar plurality of sections, the screw being hollow, and the sections beingl joined, as illustrated particularly in Fig. 4, by a pin 8 projecting into the adjacent ends of the sections of the screw and connected to said sections by cross pins 9. This constitutes a rigid and satisL vouter tubes of the severalsections and nu ing bushing 14, t

factory method of joining the sectionsfof the conveyer screw. lAfsimilar pin 1() is inserted at the thrust end of the conveyer screw and has a bearing in the cap ll-fitted at such end of the header 5 5V andat the front or driving end of the screw another similar pin 12 is inserted having a bearing in the capi 11 at such end; such pin 12 carrying a sproc et or other gear 13 by which the conveyer may be driven. Besides these end bearings the conveyer has one or more intermediate bearings in one or more bushings 14 inserted in tube 2 and .commonly located opposite the coupling or couplings 7 of such tube 2. .As shown particularly in Figs. 4 and 5, said coupling 7 has an interior rib 15v adapted to support the bearere being just suflicient clearance between said bearing bushing and shoulder 15 to permit ready insertion of the bearing bushing and to give vthe clearance necessaryfor good running. As will'be seen,

it is the pin 8 ofthe conveyer screw which has its bearing inthe bearing bushing 14. The couplings 7' have outside centering lugs 16 fittingthe inside of tube 1, these lugs comrising only a small portion of the circumerence of the bushing, so that there is ample room between said lugs for the passage of the cooling fluid. 4

To permit the ready introduction of the tubes 2, with the couplings 7 thereon, through the headers 4 into the tubes 1, while providing for packing of the joint between the headers 4 and tubes 2, said headers have internal ribs 17 interrupted at spaces 18 corresponding to the spacing of the lugs 16 of cou lings 7, and against these ribs 17 bear stee rings 19 (Fi 2). Packing rings 20 are inserted backbf tie rings 19 and the packing is set up by means of a gland 21'. Joints are formed between the header 4 and tubes 1 by other packing rings 22 arranged to be compressed by glands 23. The headers 5 are directly secured to anges on tubes 2.

To prevent the wax clogging the uptakes in headers 5, I have found it sufficient to eX- tend the thread on the delivery end of each conveyer past the uptake 24 inl the corresponding header 5 into which that screw dehvers the waX. spondingly extend the thread at the receiving end of the screw as the thread of the conveyer screw below forces the wax up through the uptake into position to be taken up y the thread ofthe next screw.

The pin 10 atthe delivery end of each conveyer screw has a reduced portion 25 projecting through a stuffing box in the correspondlng header cap 11, which reduced end serves to indicate whether the conveyer screw itself is rotating; for it is of course conceivable that the pins 9 through which the conveyer screw 'is driven'might be sheared oif, so that notwithstanding the rotation of the corresponding driving sprocket wheel'13l It is not necessary to correand pin 12, the conveyer screw might not be rotating; but since the projecting portion 25 has no work to do the pins 9.by which itis to be sheared and hence the projecting end 25 serves as a' sure indication ejfgwhether the conveyer screw is rotating or not;`

The thrust bearing at the end of each conveyer screw comprises a vbronze-V collar 26 keyed to the pin 10, and a fiber washer 27 in a recess `in the header cap 11 (see Fig. 6) against which this collar 26 bears. This thrust bearing revents the wearing of the head 11 and of t e shaft of the conveyer.

In the operation of the machine'vit will be seen that the liquid paraflin or other wax, received yin the tube 2 of the bottom 'section of the machine, is forced through said tube the conveyer'screw. therein, and up throug the uptake 24 of the header 5 at the rear end of such tube to the front end of the tube 2 of the section next above, and thence isforced forward by the conveyer screw in suchs'ec- 0nd tube 2 to the uptake'inv the header5 at the rear end of. that tube,'into the tube: 2of the secti'on next above, and so on.

At the l same time, cooling fluid,4 admitted to the l jacket space of the to section of themachine, flows through t e said jacket space, (annularspace between tubes 1 and 2) of the upper section, to the downtake 28 of the corresponding header 4, and so to the acket space of the next section, and so on the waX being cooled progressively, therefore, as it flows through the machine, so that it is delivered from the upper section in a nearly solid condition.

It is a simple matter to withdraw any con- Veyer screw; vto do so-it being necessary merely to remove the corresponding header cap 11 and pull the screw out, the bearing bushing or bushings 14 coming with it; and likewise it is a simple matter to remove any tube 2, after having first withdrawn the con- Veyer screw-within it, by disconnecting the corresponding headers 5 from that tube 2, taking out the packing between such tube and the corres onding headers 4, and then pulling the' tu e out through one of such headers 4, the lugs 16 of the coupling or couplings of, said tube 2 passing through the spaces 18 in said header 4.

While I have described the direction of ing journals, and free bearing-bushings on said journals adapted to rest against the sides of said tubes.

2. Apparatus such as described, comprising a plurality of tubes for the iiow of the material to be cooled, headers connecting them, having pass'ages for the flow of the material from one tube to the next, screw-convcyers within said tubes formed in a plurality of sections which are tubular at the ends,ijournal pins seated .in said conveyer sections and (eyed thereto, and free bearing. bushings adapted for intermediate support of said conveyers, mounted on said journal pins and` adapted to vrest against the sides of said tubes.

3. Apparatus such as described, comprising a plurality of tubes for the flow of the' Inaterial to be cooled, headers connecting them, each such tube formedin a plurality of sections, couplings conneotin said sections having inwardly-projecting veyers Within said tubes formed in corresponding sections and provided with journalpins keyed to and connecting the sections, and free bearing bushings on said journal pins adapted for intermediate support of said,

conveyers and located opposite and arranged to bear against said inwardly-projecting flanges of said couplings.

ing a plurality of tubes-for the flow of the ma- 4. Apparatus such as described, 'comprisanges, screw-con- `^terial to be cooled, formed each in a plurality of sections, couplings connecting said sections and having outwardly-extending centering lugs, jacket-tubes surrounding said first-named tubes, jacket-headers to which said jacket tubes are connected and through -which said'tirst-named tubes extend, said jacket headers provided with internal acking-abutment ribs interrupted for the ongitudinal passage of the centering-lugs on'said couplings, and packing means for forming joints between said headers and the tubes passingl through them; and headers connecting said first-named tubesgy` t 5. Apparatus such as described, comprising a plurality of tubes 'for the flow ofmaterial to be cooled, headers-connecting them, screw conveyers within said tubes having suitable supporting bearings, and a thrust bearing 4forone of said screws, comprising a bearingcollar secured to said screw and a washer of .packing material located in' a recess in the head ol' the corresponding header', andagainst-which said vcollar bears.

In testimony whereof 1 have signed this specification in the presence o i' two subscribing witnesses.

' N ICOLAI H. HILLER.

l Witnesses:A K .A

` FRANK ORCHARD,

E. M. HoLooMBn* 

